Belt buckle

ABSTRACT

The present invention provides a belt buckle, which solves the problem that the existing self-locking belt buckle is easy to be inconvenient to unlock when it is locked over tightly. The belt buckle comprises a main-body; a plate-control body; and a pawl for restricting the position of the belt-body; wherein the rear end of the main-body is set with a belt-body clamping section, the front end of the main-body is rotatedly connected with a rotation-shaft, a vice placing hole is set in the front end of the plate-control body, a groove is set on the outer surface of the front end of the main-body, and a position-restoring spring is set between the rear end of the pawl and the rear end of the bottom of the groove. The present invention can adjust the tightness of the belt by just pressing, the adjustment is convenient and the flexibility is higher.

(A) TECHNICAL FIELD OF THE INVENTION

The present invention relates to a belt buckle.

(B) DESCRIPTION OF THE PRIOR ART

At present, the working principle of the self-locking belt buckle on themarket is: when adjusting the tightness of the belt, pressing andholding the belt buckle with the thumb and rotating the handle with theindex finger to release the rotating piece (pawl) from the ratchetteeth, then the belt can be freely relaxed or tightened; and whenlocking the belt tightly, the index finger is released from the handleand the rotary plate is reset under the action of the magnet while therotary plate abuts against the ratchet teeth.

The existing automatic locking belt buckles have the followingdisadvantages:

Firstly, the adjusting of the tightness is troublesome and the rotatingpiece will be buckled tightly with the ratchet teeth when the belt isvery tight, therefore the handle is difficult to rotate and requires alot of effort to unlock it.

Secondly, the structure of the existing belt buckle is complex and theweight is heavier; the more parts, the heavier the weight and easier todamage.

SUMMARY OF THE INVENTION

The present invention provides a belt buckle, which aims to solve theproblem that the existing self-locking belt buckle is easy to need morestrength to unlock when the belt buckle is locked tightly.

In order to solve the above technical problem, the present invention isimplemented by the following technical solutions:

A belt buckle comprises a main-body; a plate-control body; and a pawlfor restricting the position of the belt-body; wherein the rear end ofthe main-body is set with a belt-body clamping section, and the frontend of the main-body is rotatedly connected with a rotation-shaft whichis set in the left-right direction; wherein a vice placing hole openedin the front-rear direction is set in the front end of the plate-controlbody, and the plate-control body is fixedly connected to therotation-shaft; wherein a groove which the pawl is located within is seton the outer surface of the front end of the main-body, and the frontend of the pawl is fixed on the rotating shaft; wherein aposition-restoring spring is set between the rear end of the pawl andthe rear end of the bottom of the groove; wherein a main limiting frameis set on the outer surface of the main-body, and a main placing hole ofthe belt-body is opened in the front-rear direction and is surroundedand formed between the main limiting frame and the outer surface of themain body.

Furthermore, the clamping section is formed by an engaging slot that isdisposed on the rear end surface of the main-body and matched with thebelt-body and a fixing screw for fixing the belt body within theengaging slot.

Furthermore, the main-body is set with a first through hole penetratingthrough the groove and the front end of the pawl is set with a secondthrough hole, and both the left and right sides of the plate-controlbody are set with a connection hole; wherein the rotation-shaft ispenetrated through the first through hole, the second through hole;wherein the second through hole and the connection hole are both fixedlyconnected with the rotation-shaft

Furthermore, the vice placing hole of the belt-body is surrounded andformed by the front edge of the board control body and a vice limitingframe set on the inner surface of the plate-control body.

Furthermore, the plate-control body is a U-shaped frame with an openback end.

Furthermore, the pawl comprises a fixing portion and a bending portion;wherein the fixing portion is fixedly connected with the rotation-shaft,and the bending portion is disposed at the rear end of the fixingportion and is bent outward.

The pawl structure is used in conjunction with a belt-body havingratcheted teeth.

Furthermore, the pawl is a triangular or square sheet structure.

Compared with the prior art, the advantages of the present inventionare:

-   -   1. In the present invention, the pawl can be driven out of the        belt-body by gently pressing the connection place between the        main-body and the plate-control body, so that the tightness of        the belt can be adjusted. Even if the belt is very tight, it can        be easily opened.    -   2. The present invention omits the panel, magnet and the like on        the belt buckle; the structure is simplified, so that the whole        becomes lighter convenient.    -   3. Under the action of the position-restoring spring, the        plate-control body and the pawl are restored position, and the        pawl abuts on the belt-body, thereby limiting the position of        the belt-body and realizing the function of automatic locking        tightly.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a structural schematic diagram of the belt buckle of the firstembodiment according to the present invention.

FIG. 2 is a structural schematic diagram of the main-body of the firstembodiment according to the present invention.

FIG. 3 is a structural schematic diagram of the plate-control body ofthe first embodiment according to the present invention.

FIG. 4 is a structural schematic diagram of the pawl of the firstembodiment according to the present invention.

FIG. 5 is a fit relationship schematic diagram of the first through holeand the rotation-shaft of the first embodiment according to the presentinvention.

FIG. 6 is a cross-section schematic diagram of the rotation-shaft of thefirst embodiment according to the present invention.

FIG. 7 is a structural schematic diagram when the belt is inserted andtightened in the first embodiment according to the present invention.

FIG. 8 is a structural schematic diagram when the belt is on wear in thefirst embodiment according to the present invention.

FIG. 9 is a structural schematic diagram when releasing the belt bypressing the belt buckle in the first embodiment according to thepresent invention.

FIG. 10 is a structural schematic diagram when the belt-body is withdrawfrom the belt buckle in the first embodiment according to the presentinvention.

FIG. 11 is a belt structural diagram which adopts the belt buckle of thefirst embodiment according to the present invention.

FIG. 12 is a structural schematic diagram of the belt buckle of thesecond embodiment according to the present invention.

FIG. 13 is a structural schematic diagram of the pawl of the secondembodiment according to the present invention.

FIG. 14 is a structural schematic diagram of the belt bucklecorresponding to the belt of the second embodiment according to thepresent invention.

FIG. 15 is a structural explosion schematic diagram of the belt buckleof the third embodiment according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

The following descriptions are exemplary embodiments only, and are notintended to limit the scope, applicability or configuration of theinvention in any way. Rather, the following detailed descriptionprovides a convenient illustration for implementing exemplaryembodiments of the invention. Various changes to the describedembodiments may be made in the function and arrangement of the elementsdescribed without departing from the scope of the invention as set forthin the appended claims.

The foregoing and other aspects, features, and utilities of the presentinvention will be best understood from the following detaileddescription of the preferred embodiments when read in conjunction withthe accompanying drawings.

Embodiment 1

Referring to FIG. 1 to FIG. 4, a belt buckle comprises a main-body 10, aplate-control body 20, and a pawl 13 for restricting the position of thebelt-body 30.

The rear end of the main-body 10 is set with a belt-body clampingsection, and the front end of the main-body 10 is rotatedly connectedwith a rotation-shaft 15 which is set in the left-right direction. Theplate-control body 20 is fixedly connected to the rotation-shaft 15. Theouter surface of the front end of the main-body 10 is set with a groove11 which the pawl 13 is located within, and the front end of the pawl 13is fixed on the rotating shaft 15. A position-restoring spring 12 is setbetween the rear end of the pawl 13 and the rear end of the bottom ofthe groove 11, which one position-restoring spring 12 is preferably usedin this embodiment, but other number of the position-restoring spring 12may also be selected according to the specific situation.

Referring to FIG. 1 and FIG. 2, a main limiting frame 16 is set on theouter surface of the main-body 10, and a main placing hole 25 of thebelt-body 30 is opened in the front-rear direction and is surrounded andformed between the main limiting frame 16 and the outer surface of themain body 10.

Referring to FIG. 3, a vice placing hole 22 opened in the front-reardirection is set in the front end of the plate-control body 20, whichthe plate-control body 20 is a U-shaped frame with an open back end.

The vice placing hole 22 of the belt-body 30 is surrounded and formed bythe front edge of the board control body 20 and a vice limiting frame 24set on the inner surface of the plate-control body 20.

Referring to FIG. 4, the pawl 13 comprises a fixing portion 131 and abending portion 132, which the fixing portion 131 is fixedly connectedwith the rotation-shaft 15. The bending portion 132 is disposed at therear end of the fixing portion 131 and is bent outward.

In order to weaken the damage of the pawl 13 to the belt body 30, anadhesive layer is set on the outer side of the pawl 13 in thisembodiment.

In this embodiment, the rotation-shaft 15 may be a single shaft or twoshafts combined to form.

The main-body 10 is set with a first through hole 26 penetrating throughthe groove 11, and the front end of the pawl 13 is set with a secondthrough hole 133. Both the left and right sides of the plate-controlbody 20 are set with a connection hole 21, which the rotation-shaft 15is penetrated through the first through hole 26, the second through hole133, and the connection hole 21. The rotation-shaft 15 is pivotallyconnected within the first through hole 26 which is a round hole;wherein the second through hole 133 and the connection hole 21 are bothfixedly connected with the rotation-shaft 15.

Referring to FIG. 2 and FIG. 5, the cross-section of the rotation-shaft15 is an arcuate shape, and the radius of the first through hole 26 isthe same as the radius of the rotation-shaft 15. When the rotation-shaft15 rotates, the main-body 10 will not follow to rotate.

Referring to FIG. 4 and FIG. 6, the front end of the pawl 13 is set witha second through hole 133 whose cross section is the same as which ofthe rotation-shaft 15.

Referring to FIG. 3 and FIG. 6, the rear end of the plate-control body200 is set with a connecting hole 21 whose cross section is the same aswhich of the rotation-shaft 15.

When the plate-control body 20 rotates, the pawl 13 and therotation-shaft 15 will rotate together. The main function of the abovestructure is that the shaft 15 and the pawl 13 will rotate together withthe plate-control body 20 when the rotation-shaft 15 and theplate-control body 20 are relatively rotated.

The cross-section of the

rotation-shaft 15 in this embodiment is not limited to the arcuateshape, which may also be a non-circular shape such as a regular polygonas long as the rotation-shaft 15 and the pawl 13 can be rotated togetherwith the plate-control body 20 and the main-body 10 does not follow therotation-shaft 15 to rotate.

In this embodiment, the clamping section is formed by an engaging slotthat is disposed on the rear end surface of the main-body 10 and matchedwith the belt-body 30 and a fixing screw for fixing the belt body 30within the engaging slot. Alternatively, the clamping section can beformed by other existing structure for clamping belt such as an engagingcomponent.

The following will further describe the present embodiment incombination with the working principle of this embodiment:

Referring to FIG. 7, when the belt is tightened, the free end of thebelt belt-body 30 (the other end of the belt-body 30 is a fixed endfixed in the clamping section of the main-body 10) is pass through thevice placing hole 22 and the main limiting hole 25 of the belt-body 30in sequence. When the belt-body 30 passes through the main limiting hole25 of the belt-body 30, the belt body 30 presses the pawl 13 until thebelt-body 30 is adjusted to an appropriate position; then the tighteningis stopped, and the pawl 13 is fastened to the ratchet teeth 31.

After the tightening is completed, a normal wearing state as shown inFIG. 8 is formed. At this time, the belt can only be tightened in onedirection and cannot be loosened in the reverse direction under theaction of the ratchet teeth 31 and the pawl 13 of the belt-body 30.

Referring to FIG. 9, when the belt needs to be loosen, using the hand togently press the connection place between the main-body 10 and theplate-control body 20 inwardly; then the plate-control body 20 willsequentially drive the rotation-shaft 15 and the pawl 13, and thebending portion 132 of the pawl 13 will move toward the bottom of thegroove 11. At the same time, the position-restoring spring 12 iscompressed by the pawl 13, and the bending portion 132 of the pawl 13 isdisengaged from the ratchet teeth 31 of the belt-body 30, so that thebelt-body 30 can be smoothly withdrawn from the belt buckle as shown inFIG. 10.

FIG. 11 shows a belt comprising the belt buckle of the first embodimentas described above. The belt comprises a belt-body 30 on which theratchet teeth 31 matched to the pawl 13 is set.

I claim:
 1. A belt buckle comprises a main-body; a plate-control body;and a pawl for restricting the position of the belt-body, which ischaracterized in that: the rear end of the main-body is set with abelt-body clamping section, and the front end of the main-body isrotatedly connected with a rotation-shaft which is set in the left-rightdirection; a vice placing hole opened in the front-rear direction is setin the front end of the plate-control body, and the plate-control bodyis fixedly connected to the rotation-shaft; a groove which the pawl islocated within is set on the outer surface of the front end of themain-body, and the front end of the pawl is fixed on the rotating shaft;a position-restoring spring is set between the rear end of the pawl andthe rear end of the bottom of the groove; a main limiting frame is seton the outer surface of the main-body, and a main placing hole of thebelt-body is opened in the front-rear direction and is surrounded andformed between the main limiting frame and the outer surface of the mainbody.
 2. The belt buckle according to claim 1, which is characterized inthat: the clamping section is formed by an engaging slot that isdisposed on the rear end surface of the main-body and matched with thebelt-body and a fixing screw for fixing the belt body within theengaging slot.
 3. The belt buckle according to claim 1, which ischaracterized in that: the main-body is set with a first through holepenetrating through the groove and the front end of the pawl is set witha second through hole, and both the left and right sides of theplate-control body are set with a connection hole; wherein therotation-shaft is penetrated through the first through hole, the secondthrough hole; wherein the second through hole and the connection holeare both fixedly connected with the rotation-shaft.
 4. The belt buckleaccording to claim 1, which is characterized in that: the vice placinghole of the belt-body is surrounded and formed by the front edge of theboard control body and a vice limiting frame set on the inner surface ofthe plate-control body.
 5. The belt buckle according to claim 1, whichis characterized in that: the plate-control body is a U-shaped framewith an open back end.
 6. The belt buckle according to claim 1, which ischaracterized in that: the pawl comprises a fixing portion and a bendingportion; wherein the fixing portion is fixedly connected with therotation-shaft, and the bending portion is disposed at the rear end ofthe fixing portion and is bent outward.